MIDI editor crash

Hello people.

I recently bought Cubase 8 and when I want to edit drums screen goes blank and do not understand what happens. I feel very bad that one taking the free stuff has no problem but when the original you want to have these things happen.

Anyone have an idea from this issues?

http://subefotos.com/ver/?644a24d00933446eb92b94e12d458e00o.jpg

same with me or several other in this forum:

https://www.steinberg.net/forums/viewtopic.php?f=226&t=81915&p=506464&hilit=editor+crash#p506464

Did you find a solution in the meantime?